Question

what causes a star to shine brightly?
o the color that is produced
o the energy that is released
o the amount of gravity that is present
o the types of elements that are present

Explanation:

Stars shine brightly due to the energy released from nuclear fusion reactions in their cores. This energy radiates outward, making the star shine. Color, gravity, and element - types are related to star properties but not the direct cause of shining.

Answer:

the energy that is released